S-90484A240 10-24 x 3/8" ASME B18.3, ASTM F835 Tamper-Resistant Hex-Drive Steel Button Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with specialized 5/32" hex drive for secure installations in public or restricted-access environments
• Superior corrosion protection through black-oxide coating on alloy steel, extending service life in demanding conditions
• Exceptional mechanical strength with 130,000 psi tensile strength and Rockwell C39 hardness for high-stress applications
• Reliable thread engagement with Class 3A fit UNC coarse threads ensuring vibration resistance and secure fastening
• Streamlined installation through fully threaded design and rounded button head profile for flush mounting
• Broad industrial compliance meeting ASME B18.3 and ASTM F835 specifications for quality assurance
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing standards

Professional Applications & Engineering Value

These black-oxide alloy steel rounded head screws deliver critical performance where security and durability intersect. The tamper-resistant hex drive prevents unauthorized access in public infrastructure, electronic enclosures, and machinery guards, while the UNC coarse thread pattern provides rapid installation and superior resistance to vibrational loosening in industrial equipment. The Rockwell C39 hardness and 130,000 psi tensile strength ensure reliable performance under mechanical stress, making these fully threaded screws ideal for assembly lines, automotive components, and heavy-duty manufacturing applications where consistent clamping force and long-term reliability are paramount.

Specification Summary & Compliance

Manufactured to precise Class 3A thread fit tolerances with 10-24 UNC coarse threads and 0.361" head diameter. Complies with ASME B18.3 dimensional standards and ASTM F835 material specifications. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements for industrial use.